Previously, the Library housed a printing room, with working presses, which operated as a small publisher under the imprint 'Eagle Press'. The Eagle Press Collection contains facsimile reprints of printing manuals dating from the 18th and 19th centuries, together with the press' publications.

The Entomology Collection currently contains books on insects which were published between the late-Eighteenth and mid-Nineteenth Centuries, some of which have hand-coloured illustrations. The books are written in English, French or German, for the most part, with some in Latin.

Books published by Flambard Press, independent publisher based in Hexham which ran from 1990 - 2014. Includes poetry, novels, short stories and non-fiction and is strong in work by local authors.

The Fletcher Collection of books bequeathed by Professor G.B.A. Fletcher (1903-1995) of the Department of Classics, contains antiquarian editions of classical texts, written in Latin, Ancient Greek and in English translations.

Recognised authors, such as Livy, Cicero, Terence, Virgil, Aeschylus, Tacitus and Sophocles are all represented. Some of the books were produced by the early printing houses, the Aldine and Elzevier presses.

The Friends Collection has been built-up through purchases with funds from the Friends of the Library. It contains such rare books as Robert Boyle's Tracts: containing I. Suspicions about some hidden qualities of the air … (1674), J. Dryden's Albion and Albanius (1691), Some considerations on the consequences of the French settling colonies on the Mississippi: with respect to the trade and safety of the English plantations in America and the West-Indies (1720), various pamphlets by Thomas Paine and Edmund Burke, Newcastle songsters and other local material such as Report of the Orphan-House Sunday-School, Newcastle upon Tyne (1815-16). English literature is a particular strength of the collection.

This collection of early works on agriculture is rich in eighteenth and nineteenth-century reports on farming in many parts of Great Britain. The collection had as its nucleus the historical library of the late Professor D.A. Gilchrist (d. 1927), who held the Chair of Agriculture in Armstrong College from 1902 to 1927.

A collection highlight is William Billington's A series of facts, hints, observations, and experiments on the different modes of raising young plantations of oaks (1825) which demonstrates the common preoccupation of many early nineteenth-century estate owners with growing trees which would be suitable for use in shipbuilding.

The Grey Tracts reflect the interests of their former owner, the 2nd Earl Grey (1764-1845) whose Whig government was responsible for the 1832 Reform Act, 1833 Factory Act and the 1834 Poor Law Amendment Act. The pamphlets cover a broad range of historical, social and economic subjects including colonial policy, public finance and banking, the Corn Laws and agriculture, poor relief, slavery, Catholicism, Ireland and the Greek Revolution.

This collection of c. 250 dictionaries consists of a 1916 bequest by R. Oliver Heslop, philologist and antiquary, together with a few later additions. It includes Baret's Alvearie (1580), Florio's Worlde of Wordes (1598 and 1611), Minsheu's Guide into Tongues (1625 and 1627), the works of such lexicographers as Bullokar, Coles, Holyoake and Johnson, and an almost complete set of the publications of the English Dialect Society.

This collection also contains papers comprising Heslop's research material for his work Northumberland Words, published by the English Dialect Society in 1892-1894.

The Library of Heversham Grammar School in Westmorland. The Library was intended for the use of neighbouring clergy as well as for the masters and pupils of the School, and books were also given by local gentry and former pupils. Two MSS. Catalogues, compiled abound 1800, show that the Library then consisted of 600 volumes, of which about 450 survive. The collection consists mainly of editions of classical or theological authors, with approximately half of the volumes having been printed before 1700 and a few before 1600.

This small collection comprises books which were produced in the infancy of the art of printing, and specifically before 1500. The collection includes such works as the Epistolae of St. Jerome, printed in Palma in 1480, Opus de peste, a tract on plague printed in Bologna in 1478, and the first printed book on architecture, Alberti's De Re Aedificatoria (1485).